Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11708723 | Guide for top drive unit | Robert L. Gordon, Ronald K. Gillespie, David L. Williams, Bobby D. Fisk, Charles W. Harjo | 2023-07-25 |
| 10895111 | Guide for top drive unit | Robert L. Gordon, Ronald K. Gillespie, David L. Williams, Bobby D. Fisk, Charles W. Harjo | 2021-01-19 |